Moisture injector for internal-combustion engine carburetors



NOV. 27, 1951 s, s s 2,576,196

MOISTURE INJECTOR FOR INTERNAL-COMBUSTION ENGINE CARBURETORS Filed Sept, 15, 1946 INVENTOR, STANLEY STA NALIS,

ATTORNEYS Patented Nov. 27, 1951 MOISTURE INJECTOR FOR INTERNAL-COM- BUSTION ENGINE CARBURETORS Stanley Stanalis, Venice, Calif.

Application September 13, 1946, Serial No. 696,687

2 Claims. 1

This invention relates to carburetor devices and more particularly to a device for injecting moisture into the carburetor of an internal combustion engine responsive to opening the throttle.

A main object of the invention is to provide a novel means for introducing moisture into the fuel mixture of an internal combustion engine whereby improved performance and fuel economy will be obtained for the engine.

A, further object of the invention is to provide an improved moisture feed means for internal combustion engine carburetors, said feed means being very simple in construction, easy to install,

reliable in operation and providing varying degrees of moisture injection, depending upon the position of the engine throttle.

Further objects and advantages of the invention will become apparent from the following description and claims and from the accompanying drawing wherein the single figure is an elevational view, partly in cross-section, illustrating an internal combustion engine carburetor provided with moisture injection means constructed according to the present invention.

Referring to the drawing, ll designates a carburetor of conventional design having a float chamber i2 from which extends a fuel discharge nozzle I3 which terminates in the fuel Venturi element 14. Positioned below Venturi element Id is the mixing Venturi element l5 in which the vaporized fuel is mixed with air. In the exit portion of the carburetor which is connected to the intake manifold I6 of the engine is a throttle valve I! having an actuating arm [8 pivotally connected at H! to a throttle control rod 26. Throttle control rod 26 is biased by means not shown to a rearward position wherein throttle valve H is closed. Valve I! is opened by moving rod 29 forwardly in the direction indicated by the arrow in the figure.

Projecting through the wall of carburetor It and terminating in the mixing Venturi element are a pair of moisture injection conduits 2| and 22. Conduit 2| is connected to the forward portion of a cylinder 23 and conduit 22 is connected to said cylinder at a point spaced a short distance rearwardly of the connection of conduit 2!. The forward portion of cylinder 23 is connected by a conduit 24 to the lower end of a Water reservoir 25. The top end of reservoir 25 is con-- nected by a conduit 26 to the upper air intake portion of carburetor ll. Conduit 26 provides air vent means for admitting air into the upper portion of reservoir 25 as water is discharged from said reservoir through conduit 24.

Slidably positioned in cylinder 23 is a plunger member 2'! which is connected by a plunger rod 28- to a lever member 29. Lever member 29 is pivoted at 3!} to a stationary portion of the engine and is pivotally connected at 3| to the end of throttle control rod 20. Plunger member 2i is biased by rod 2d to a forward position in cylinder 23 where in it closes off the ports communicating with the respective conduits 2|, 22 and 26. When rod 20 is moved forwardly, plunger member 21 moves rearwardly and initially establishes communication between conduit 24 and conduit 2 I. Moisture is then injected by gravity into mixing Venturi l5 through conduit 2|. When rod 2ft is moved further forwardly, as when the speed of the engine is being increased, the port communicating with conduit 22 is exposed and an additional moisture charge is injected into Venturi [5 through conduit 22. The quantity of moisture injected into the carburetor is thus made dependent on the degree of opening of throttle valve I1, and no moisture will flow into the carburetor when the throttle valve is closed.

The addition of moisture to the vaporized fuel mixture improves the engine performance, provides increased fuel economy, and reduces the amount of carbon ordinarily deposited on the parts inside the engine, which thus prolongs the life of the engine.

While a specific embodiment of a moisture injection device for carburetors has been disclosed in the foregoing description, it will be understood that various modifications within the spirit of the invention may occur to those skilled in. the art. Therefore it is intended that no limitations be placed on the invention other than as defined by the scope of the appended claims.

What is claimed is:

1. A carburetor comprising a liquid fuel Venturi, a liquid fuel and air mixing Venturi below and communicated with said liquid fuel Venturi, a throttle valve on the suction side of said mixing Venturi, a water supply, conduit means leading from said supply comprising a plurality of water jets discharging into said mixing Venturi, and control means in said conduit means responsive to opening of said throttle valve for occluding said plurality of water jets while said throttle valve is closed and successively opening said water jets as said throttle is progressively opened, said control means comprising a cylinder connected in said conduit means, a piston working in said cylinder and operatively connected to said throttle valve for actuation responsive to the opening and closing movements of the throttle valve, a series of longitudinally spaced ports in said cylinder with which said Water jets are severally connected, and a single port to which is connected that portion of said conduit means leading from said Water supply, said piston being arranged to occlude said series of ports and said single port in the closed position of said throttle valve and to uncover said single port and successive ones of said series of ports as said throttle valve is position.

2. Moisture-injection means for an internal.

combustion engine carburetor having a fuel and air-mixing venturi and a throttle valve, compris-- ing a water reservoir, a feed conduit extending from the reservoir, a control valve, said control valve comprising a cylinder connected to the conduit and having a piston slidable therein, means operatively connecting said piston to said throttle valve for responsive-movement with said throttle valve, a first conduit leading from said cylinder and discharging into said fuel and air-mixing venturi of the carburetor, and a second conduit leading from said cylinder and discharging'into said fuel and air-mixing venturi, the connection of said second conduit with said cylinder being longitudinally spaced from the connection of said first conduit to said cylinder, said piston being arranged to occlude the connections of all three conduits with said cylinder while the carburetor throttle valve is closed and to communicate said feed and first conduit connections together in its initial movement, and to communicate the feed conduit with both the first and second conduits as said throttle valve is progressively opened.

- STANLEY STANALIS.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 989,515 Sprunget a1. Apr. 11, 1911 1,078,582 Jaugey Nov. 11, 1913 1,275,379 Bushey Aug.- 13, 1918 1,465,828 Pate Aug. 21, 1923 1,480,959 Secor Jan. 15, 1924 1,753,235 Duif Apr. 8, 1930 1,920,174 Harris Aug. 1, 1933 1,983,957 White Dec. 11, 1934 2,049,687 Chamberlain et a1. Aug. 4, 1936 2,091,566 Portes Aug. 31, 1937 2,187,885 Markham Jan. 23, 1940 FOREIGN PATENTS Number Country Date 833,223 France Oct. 17, 1938 

